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Reuse input vector for LUMINANCE_ALPHA/HALF_FLOAT

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This commit is contained in:
Anthony Ramine 2018-09-10 12:43:38 +02:00
parent 7e7441749b
commit e1486f7d71
1 changed files with 6 additions and 5 deletions
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11
components/script/dom/webglrenderingcontext.rs
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@ -4178,12 +4178,13 @@ fn rgba8_image_to_tex_image_data(
pixels pixels
}, },
(TexFormat::LuminanceAlpha, TexDataType::HalfFloat) => { (TexFormat::LuminanceAlpha, TexDataType::HalfFloat) => {
let mut data = Vec::<u8>::with_capacity(pixel_count * 8); for rgba8 in pixels.chunks_mut(4) {
for rgba8 in pixels.chunks(4) { let lum = f16::from_f32(rgba8[0] as f32).as_bits();
data.write_u16::<NativeEndian>(f16::from_f32(rgba8[0] as f32).as_bits()).unwrap(); let a = f16::from_f32(rgba8[3] as f32).as_bits();
data.write_u16::<NativeEndian>(f16::from_f32(rgba8[3] as f32).as_bits()).unwrap(); NativeEndian::write_u16(&mut rgba8[0..2], lum);
NativeEndian::write_u16(&mut rgba8[2..4], a);
} }
data pixels
}, },
// Validation should have ensured that we only hit the // Validation should have ensured that we only hit the